From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CF45C6377B for ; Thu, 15 Jul 2021 18:53:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 086F1613C4 for ; Thu, 15 Jul 2021 18:53:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241802AbhGOSzu (ORCPT ); Thu, 15 Jul 2021 14:55:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:52350 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239793AbhGOSuz (ORCPT ); Thu, 15 Jul 2021 14:50:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5CF3A613DA; Thu, 15 Jul 2021 18:47:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626374872; bh=dT8hcCxhperB/T+8aYy1wP8AerwINrRNIYBFnfhjs7g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GaEfnnu3mwfaAbB5r4JvzutNfP43QfKD9xE8YpA4JYXXJPdMj7QTxwgRSFxCz5S2+ rrXs+pe2ovtpMqedGvs0hwza80swLguBY91KA7iLC4PvVjo03qIt/xrr6C32DPUADQ 2nu4q27Ds83ADk8R1EDFNGp6AqZLztPY8gTIWmwo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ansuel Smith , Florian Fainelli , "David S. Miller" , Sasha Levin Subject: [PATCH 5.10 017/215] net: mdio: ipq8064: add regmap config to disable REGCACHE Date: Thu, 15 Jul 2021 20:36:29 +0200 Message-Id: <20210715182601.755083135@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210715182558.381078833@linuxfoundation.org> References: <20210715182558.381078833@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ansuel Smith [ Upstream commit b097bea10215315e8ee17f88b4c1bbb521b1878c ] mdio drivers should not use REGCHACHE. Also disable locking since it's handled by the mdio users and regmap is always accessed atomically. Signed-off-by: Ansuel Smith Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/mdio/mdio-ipq8064.c | 33 ++++++++++++++++++++++++--------- 1 file changed, 24 insertions(+), 9 deletions(-) diff --git a/drivers/net/mdio/mdio-ipq8064.c b/drivers/net/mdio/mdio-ipq8064.c index 1bd18857e1c5..f0a6bfa61645 100644 --- a/drivers/net/mdio/mdio-ipq8064.c +++ b/drivers/net/mdio/mdio-ipq8064.c @@ -10,7 +10,7 @@ #include #include #include -#include +#include #include #include @@ -96,14 +96,34 @@ ipq8064_mdio_write(struct mii_bus *bus, int phy_addr, int reg_offset, u16 data) return ipq8064_mdio_wait_busy(priv); } +static const struct regmap_config ipq8064_mdio_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .can_multi_write = false, + /* the mdio lock is used by any user of this mdio driver */ + .disable_locking = true, + + .cache_type = REGCACHE_NONE, +}; + static int ipq8064_mdio_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct ipq8064_mdio *priv; + struct resource res; struct mii_bus *bus; + void __iomem *base; int ret; + if (of_address_to_resource(np, 0, &res)) + return -ENOMEM; + + base = ioremap(res.start, resource_size(&res)); + if (!base) + return -ENOMEM; + bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*priv)); if (!bus) return -ENOMEM; @@ -115,15 +135,10 @@ ipq8064_mdio_probe(struct platform_device *pdev) bus->parent = &pdev->dev; priv = bus->priv; - priv->base = device_node_to_regmap(np); - if (IS_ERR(priv->base)) { - if (priv->base == ERR_PTR(-EPROBE_DEFER)) - return -EPROBE_DEFER; - - dev_err(&pdev->dev, "error getting device regmap, error=%pe\n", - priv->base); + priv->base = devm_regmap_init_mmio(&pdev->dev, base, + &ipq8064_mdio_regmap_config); + if (IS_ERR(priv->base)) return PTR_ERR(priv->base); - } ret = of_mdiobus_register(bus, np); if (ret) -- 2.30.2